Dumping suspended instances of a BZT 2010 Application

While undeploying an application before to proceed to the deploy of a new version of the same app, I am getting this error:

Stopping CapGemini.Adecco.AW.Bts.Core application...

Checking for existing service instances associated with application 'CapGemini.Adecco.AW.Bts.Core'...

D:\Packages\AdeccoWeb_6.8.1(Major)\BizTalk\Core\CapGemini.Adecco.AW.Bts.Core\Deployment\Framework\BizTalkDeploymentFramework.targets(1138,5): error :
There is at least one service instance associated with the 'CapGemini.Adecco.AW.Bts.Core' application [Instance Status = Suspended]. An application be removed only when there are no associated service instances.

You'll want to upgrade to v5.1 (currently Beta 2). There is a new property called AutoTerminateInstances. It is already True for local Visual Studio deployments but False
by default for server deployments. Since it appears that you are just doing a local deployment, the behavior you want is now the default in v5.1.